Animation nodes bake to keyframes not working with polygon decomposed offsets
The Mesh Object Output node does not support keyframe baking. A list of nodes that support keyframe baking are listed below:


Cycles Material Output.
Object Attribute Output.
Object Data Path Output.
Object Matrix Output.
Object Transforms Output.
Object Visibility Output.
Shape Key Output.
Text Sequence output. (Text input is not keyframe-able)
Text Object Output. (Text input is not keyframe-able)
Curve Object Output. (Splines input is not keyframe-able)